/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.sentry;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.TestOnly;

/**
 * SentryExecutorService
 *
 * @since 2021-06-02
 **/
final class SentryExecutorService implements ISentryExecutorService {
    private final @NotNull ExecutorService executorService;

    /**
     * constructor
     *
     * @param executorService ExecutorService
     */
    @TestOnly
    SentryExecutorService(final @NotNull ExecutorService executorService) {
        this.executorService = executorService;
    }

    /**
     * constructor
     */
    SentryExecutorService() {
        this(Executors.newSingleThreadExecutor());
    }

    @Override
    public @NotNull Future<?> submit(final @NotNull Runnable runnable) {
        return executorService.submit(runnable);
    }

    @Override
    public void close(final long timeoutMillis) {
        synchronized (executorService) {
            if (!executorService.isShutdown()) {
                executorService.shutdown();
                try {
                    if (!executorService.awaitTermination(timeoutMillis, TimeUnit.MILLISECONDS)) {
                        executorService.shutdownNow();
                    }
                } catch (InterruptedException e) {
                    executorService.shutdownNow();
                    Thread.currentThread().interrupt();
                }
            }
        }
    }
}
